AC220CX-AC1500CX Cyan Red Gold metallic gloss pigments multiple mesh sizes

Product Overview — True Metallic Effect from Metal Flakes

The AC****CX series belongs to Kolortek's Metallic Gloss Pigments portfolio — a copper gold powder family built on copper-zinc alloy particles. Unlike mica-based pearl pigments that create color through light interference, these are actual metal flakes that reflect light like a polished metal surface. The cyan red gold color combines warm copper tones with a golden sheen, making it a versatile choice for decorative finishes that need rich, warm metallic character.

In our application lab, we see formulators choose this series when they need a cost-effective alternative to metallic foil or when pearl pigments don't provide enough metallic punch. The alloy composition gives the flakes durability during processing, and the particle size range lets you dial in the exact visual texture your application requires.

Product Series & Model Codes

The AC220CX-AC1500CX lineup provides seven mesh sizes under a single color designation. Each mesh size serves a distinct use case, from bold decorative sparkle to smooth printing finishes.

The AC****X family also includes Red Copper (RX series), Cyan Gold (GX series), and Antique Bronze (BX series) — all sharing the same mesh size structure. This makes it easy to mix colors within the same particle size range for custom metallic blends.

Technical Characteristics

Composition & Visual Effect

The pigment is a copper-zinc alloy (gold bronze type) processed into thin flakes. When dispersed in a binder and applied to a surface, these flakes align parallel to the substrate, creating a continuous metallic reflective layer. The cyan red gold color is inherent to the alloy composition — it does not rely on optical interference or coating layers, so the effect remains stable under varying lighting conditions.

Hiding Power & Loading

Metal flake pigments are opaque by nature. At 3-8% loading by weight, the AC****CX series provides full coverage over dark substrates. Lower loadings (1-3%) create translucent metallic veiling effects, useful for topcoats over colored bases. Higher loadings above 8% do not significantly improve opacity but may affect rheology and cost.

Heat Stability & Chemical Resistance

Copper-zinc alloy is heat stable through typical coating baking cycles and thermoplastic processing temperatures. The metal itself does not decompose or discolor from heat. However, the alloy is chemically reactive. Avoid formulations with pH below 6 or above 9 — acidic or alkaline environments will oxidize the metal surface, causing discoloration and loss of luster. In water-based systems, a protective surface coating (silica, stearate, or polymer encapsulation) is required to prevent reaction with water, which generates hydrogen gas and causes tarnishing.

Electrical Conductivity

The pigment is electrically conductive. This makes it unsuitable for applications requiring electrical insulation, such as electronic component coatings or conductive pathway isolation.

Application Guide

Solvent-Based Decorative Coatings

This is the primary application for the AC****CX series. Picture frames, furniture trim, architectural moldings, and decorative hardware all benefit from the warm, reflective cyan red gold finish. For these applications, 400-800 mesh provides good balance between metallic impact and smooth application. The pigment disperses easily in alkyd, polyurethane, and acrylic solvent systems with low-shear mixing.

Printing Inks

Packaging, labels, greeting cards, and security printing use 800-1500 mesh grades. The finer particle sizes allow the ink to pass through printing screens and rollers without clogging, while still delivering a metallic appearance. Offset and gravure printing typically require 1200 or 1500 mesh for consistent ink flow and uniform metallic coverage.

Plastics Masterbatch

Injection molding and extrusion of decorative plastic items (toys, consumer goods packaging, automotive interior trim) use 800-1200 mesh. The pigment must be pre-dispersed into a masterbatch carrier resin to ensure uniform distribution in the final molded part. The high specific gravity of metal flakes means they settle during storage, so thorough mixing before use is critical.

Textile Printing

Screen printing on fabric for decorative garments and home textiles uses 400-800 mesh. The pigment is mixed into a textile binder system and printed onto the fabric surface. The metallic effect sits on top of the textile rather than penetrating the fibers, so abrasion resistance depends on the binder formulation.

Religious and Cultural Items

Statue decoration, temple ornaments, and ceremonial objects often use metallic finishes for visual richness. The cyan red gold color suits traditional and decorative applications where warm metallic tones are preferred over silver or aluminum.

Application Compatibility Summary

Formulation & Processing

Dispersion

Use low-shear mixing to avoid deforming the metal flakes. High-speed dispersers with cowles blades work well — the goal is to wet out the flakes and distribute them evenly without breaking them down. Avoid ball mills and high-intensity mixers that flatten or fracture the particles. In practice, we add the pigment slowly to the binder under moderate agitation, allowing each addition to fully incorporate before adding more.

pH Control

Maintain formulation pH between 6 and 9. Below pH 6, acids attack the copper-zinc alloy, causing rapid discoloration and hydrogen gas evolution. Above pH 9, alkaline conditions also corrode the metal surface. Most solvent-based systems naturally fall within this range, but water-based formulations require pH monitoring and adjustment.

Water-Based Systems

Bronze powders react with water, producing hydrogen gas and discoloration. To use the AC****CX series in water-based coatings or inks, the pigment must be protected with a surface coating — typically silica, stearate, or polymer encapsulation. This barrier prevents direct contact between water and the metal surface. If you are formulating a water-based system, confirm with us that the specific grade you are using has the required surface treatment.

Storage & Handling

Store in sealed containers in a dry environment. Exposure to moisture and air over time can lead to surface oxidation. The pigment is a non-flammable solid and is not classified as hazardous for transport. MSDS/SDS is provided with all shipments.

Quality & Compliance

Kolortek's manufacturing facility operates under ISO 9001:2015 certification, covering production and sales of glitters, pigments, and fillers. This ensures batch-to-batch consistency and traceability. The AC****CX series is not for cosmetic use — metal pigments are not cosmetic-grade and must not be used in personal care products. For food-contact applications, specific compliance must be confirmed on a case-by-case basis.

Frequently Asked Questions

Can I use AC****CX cyan red gold pigments in water-based coatings?

Traditional bronze powders react with water, producing hydrogen gas and discoloration. The AC****CX series requires a protective surface coating (silica, stearate, or polymer encapsulation) for use in water-based systems. Confirm with us that the specific grade has this treatment before formulating a water-based product.

What mesh size should I choose for printing inks?

For screen printing, use 800-1000 mesh. For offset and gravure printing, use 1200-1500 mesh. Finer particle sizes prevent clogging in printing equipment while still delivering a metallic appearance. The 1500 mesh grade provides the smoothest ink flow and is the standard choice for high-speed commercial printing.

How does cyan red gold differ from standard copper or bronze pigments?

Cyan red gold is a specific copper-zinc alloy composition that produces a warm golden tone with copper and bronze undertones. Standard copper pigments are redder, and standard bronze pigments are more yellow-gold. The cyan red gold color sits between these, offering a richer, more complex metallic appearance that works well in decorative applications.

What is the typical loading rate for full opacity in a coating?

3-8% by weight provides full coverage over dark substrates. Lower loadings (1-3%) create translucent metallic veiling effects. Higher loadings above 8% do not significantly improve opacity but may affect rheology and increase cost. Start at 5% and adjust based on your substrate color and desired metallic intensity.

Contact our technical team to discuss formulation requirements for your specific application.